Solve the equation using the multiplication property of equality.-7x = -63
A. {2}
B. {56}
C. {9}
D. {-56}
Answer: C
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Find the focus and directrix of the parabola.y2 = -32x
A. F: (8, 0); D: x = -8 B. F: (-8, 0); D: y = 8 C. F: (0, -8); D: y = 8 D. F: (-8, 0); D: x = 8
Solve the problem. Round your answer to the nearest tenth, if necessary.A man rode a bicycle for 12 mi and then hiked an additional 8 mi. The total time for the trip was 5 hr. If his rate when he was riding a bicycle was 10 mph faster than his rate walking, what was each rate?
A. Bike: 14.5 mph; hike: 4.5 mph B. Bike: 13 mph; hike: 3 mph C. Bike: 12 mph; hike: 2 mph D. Bike: 11.5 mph; hike: 1.5 mph
Evaluate. Assume that all variables represent positive numbers. 
A. -5 B. 5 C. 21 D. -21
Solve the problem.The length of a rectangle is x2 - 3x + 2 and its width is x - 3. Find its dimensions assuming that its area is 210 square units.
A. Length: 210; width: 8 B. Length: 5; width: 5 C. Length: 69; width: 11 D. Length: 210; width: 5